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| author | Arpit Chakladar <arpitchakladar+git@gmail.com> | 2026-07-31 19:22:37 +0530 |
|---|---|---|
| committer | Arpit Chakladar <arpitchakladar+git@gmail.com> | 2026-07-31 19:23:18 +0530 |
| commit | fa5e6fad9af6df2890bd0f18c47f8f4fb9a420fa (patch) | |
| tree | c5f85b8681d83cc505eef8f4d2d4b2a894e31c9b /src/offscreen/ocr/index.js | |
| parent | 89566df399853bff5405ec53c87efa581f0808b0 (diff) | |
| download | banglar-bhumi-utils-fa5e6fad9af6df2890bd0f18c47f8f4fb9a420fa.tar.gz banglar-bhumi-utils-fa5e6fad9af6df2890bd0f18c47f8f4fb9a420fa.zip | |
feat: removed ocr
- After the latest updates on the banglarbhumi.gov.in website
the captcha has been changed to a question based captcha
Diffstat (limited to 'src/offscreen/ocr/index.js')
| -rw-r--r-- | src/offscreen/ocr/index.js | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/src/offscreen/ocr/index.js b/src/offscreen/ocr/index.js deleted file mode 100644 index dfe93c9..0000000 --- a/src/offscreen/ocr/index.js +++ /dev/null @@ -1,59 +0,0 @@ -import Tesseract from "./static/tesseract.esm.min.js"; - -let ocrWorker = null; -const WORKER_PATH = chrome.runtime.getURL("offscreen/ocr/static/worker.min.js"); -const CORE_PATH = chrome.runtime.getURL("offscreen/ocr/static"); - -/** - * Creates (or reuses) a Tesseract.js worker and recognises text from - * the given image data URL. The worker is configured to only recognise - * uppercase alphanumerics (excluding `0`, `O`, `1`, `I`) suitable for - * CAPTCHA text. - * - * @param {string} dataURL - A `data:image/png;base64,…` string. - * @returns {{ text: string, confidence: number }} - */ -async function performOcrInOffscreen(dataURL) { - if (!ocrWorker) { - ocrWorker = await Tesseract.createWorker("eng", 1, { - workerPath: WORKER_PATH, - corePath: CORE_PATH, - workerBlobURL: false - }); - - await ocrWorker.setParameters({ - // The only characters that appears - tessedit_char_whitelist: "ABCDEFGHJKLMNPQRSTUVWXYZ23456789" - }); - } - - const { data } = await ocrWorker.recognize(dataURL); - return data; -} - -// Listen for messages from the Service Worker -/** - * Handles two message types from the background service worker: - * - `"OFFSCREEN_OCR_REQUEST"`: runs OCR on the supplied data URL. - * - `"OFFSCREEN_TERMINATE_OCR_WORKER"`: terminates the worker to free memory. - */ -chrome.runtime.onMessage.addListener((message, _sender, sendResponse) => { - if (message.type === "OFFSCREEN_OCR_REQUEST" && message.dataURL) { - performOcrInOffscreen(message.dataURL) - .then(function({ text, confidence }) { - sendResponse({ success: true, text, confidence }); - }) - .catch(function(error) { - sendResponse({ success: false, error: error.message }); - }); - return true; - } - - if (message.type === "OFFSCREEN_TERMINATE_OCR_WORKER") { - if (ocrWorker) { - ocrWorker.terminate(); - ocrWorker = null; - } - sendResponse({ success: true }); - } -}); |
